baobay

Hello all,
Trying to locate the negative terminal for the 12V battery in 24 GLC 43 AMG so I can disconnect it in order to do the Distronic Plus Retrofit.
I can see the 48 V battery and the 12 V positive terminal once I remove the cabin filter under the hood on the passenger side. I cannot seem to locate the 12v negative terminal. Any help would be appreciated. Thanks.

baobay

Here’s what it looks like

baobay

I’m thinking this may be the 12 volt negative terminal but not sure.